How Satellite Modems Work and Their Benefits

Satellite modems are a crucial part of satellite internet technology, allowing users to connect to the internet through a satellite dish and a modem.

Satellite modems use radio waves to transmit data between the user's device and a satellite in orbit around the Earth.

They work by converting digital data into radio signals, which are then sent to the satellite and transmitted back to Earth as a digital signal.

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A satellite modem is a packaged solution that provides globally available two-way satellite communications.

It's essentially a hardware package that includes everything you need to get started, such as the Iridium 9522B modem, mounting hardware, a COM9522B modem interface, and an antenna with a mount.

The IRIDIUM9522B package is designed to be easy to use, with all the necessary hardware included, making it simple to connect to a remote station with Campbell Scientific's LoggerNet software.

The internet is a vast network of interconnected computers that communicate with each other using standardized protocols. It's what allows you to access information, connect with others, and stream your favorite shows.

To access the internet, you need a few basic components, including a modem and a router. These devices work together to connect your home network to the internet.

Satellite internet, like Hughesnet, Viasat, and Starlink, uses a combination of a modem and a router to connect your home to the internet via satellite signals. This type of internet requires you to rent or buy equipment directly from the company when you sign up.

Here are the three big satellite internet companies and their corresponding modems and routers:

It's worth noting that some customers may want to upgrade their router to get better signal strength in a big house or to connect more devices directly.

A satellite modem is a packaged solution that enables globally available two-way satellite communications. The IRIDIUM9522B is a great example of this, providing reliable end-to-end serial connectivity.

It's a compact solution that includes all the necessary hardware to get started. The Iridium 9522B modem is the core of this package, and it's paired with mounting hardware, a COM9522B modem interface, and cabling for configuration and connection to a data logger.

Typically, one Iridium 9522B is placed at the LoggerNet computer and at each of the remote data logging sites. This setup allows for seamless communication between the remote stations and the LoggerNet computer.

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A satellite modem's main functions are modulation and demodulation. These processes allow for the transmission and reception of data through satellite communication.

Modulation types used in satellite communications include Binary phase-shift keying (BPSK), Quadrature phase-shift keying (QPSK), and Quadrature amplitude modulation (QAM), especially 16QAM.

Error correction codes, such as Convolutional codes and Reed–Solomon codes, are also used to ensure the integrity of the data being transmitted.

Here are some popular modulation types used in satellite communications:

Satellite modems are capable of modulation and demodulation, and they use various error correction codes and framing formats.

One of the key features of satellite modems is their ability to support multiple modulation types, including BPSK, QPSK, OQPSK, 8PSK, and QAM, with 16QAM being a popular choice.

Satellite modems also support various error correction codes, such as convolutional codes, Reed-Solomon codes, and turbo codes, which help to ensure reliable data transmission.

In terms of frame formats, satellite modems support IBS framing, IDR framing, MPEG-2 transport framing, and E1 and T1 framing.

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High-end modems also offer additional features, including multiple data interfaces, EDMAC, AUPC, and a drop and insert feature for multiplexed streams.

Some satellite modems, like the 900 Board Satellite Modem, have specific features such as DVB-S2 up to 45 Msps, adaptive TDMA up to 29 Msps, and dual demodulators to support two data streams.

A digital modulator transforms a digital stream into a radio signal at the intermediate frequency (IF), while a demodulator is a crucial part of the receiver, responsible for recovering symbol and carrier frequencies.

Demodulators often include timing recovery and carrier recovery circuits, as well as an intersymbol interference equalizer, to ensure accurate data recovery.

The Iridium satellite network, for example, offers global coverage for data communication with any station that has a view of the sky, making it ideal for high-latitude, high-altitude, or mobile applications.

Here are some benefits and features of the Iridium satellite network:

LoggerNet is a powerful software that allows for seamless communication with data loggers over the Iridium network. It supports the Iridium 9522B, enabling users to establish a connection and start collecting data.

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LoggerNet also provides user control through direct communications with the remote station using the Iridium Dial-up or RUDICS services. This means users can access and manage their remote stations from anywhere in the world.

LoggerNet can run unattended, which is a huge advantage for users who need to collect data and images at scheduled intervals. It can also handle remote station administration, making it a convenient and efficient tool.

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There are several types of satellite modems, each designed for specific applications.

The most common type is the VSAT (Very Small Aperture Terminal) modem, used for commercial and government communications.

VSAT modems are popular due to their reliability and high-speed data transfer capabilities, reaching speeds of up to 1 Gbps.

Another type is the BGAN (Broadband Global Area Network) modem, designed for mobile satellite communications.

BGAN modems offer speeds of up to 492 Kbps and are often used for remote work and emergency communications.

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There's a three-way competition between Viasat, Hughesnet, and Starlink for satellite internet providers. This competition makes it essential to choose the right equipment for your needs.

Hughesnet is one of the best rural internet providers in the United States. It comes with a quality satellite modem-router combo, the HT2000W.

This combo features dual-band technology, WPA security, and four Ethernet ports. It's perfect for basic activities like streaming, Zooming, and browsing the internet.

The HT2000W is designed to get the most out of the satellite service. Its dark, sleek design blends in well with any decor.

Hughesnet's modem and router combo costs $14.99-$19.99 a month to rent or $349.99 to buy outright. This makes it a significant investment, especially if you're not sure about sticking with the service.

Viasat is a great option for satellite internet, and its equipment is designed to meet everyday needs.

The Viasat WiFi Gateway is the modem and router device provided by Viasat, featuring dual-band 802.11ac technology and WPA security.

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It has two Ethernet ports and a Viasat voice adapter port, making it a solid choice for most customers.

A $12.99-a-month rental fee or a $299.99 purchase price are the options available for this device.

Most customers will probably want to stick with renting the equipment, but purchasing it could be more economical if you plan to use Viasat's service for more than a few years.

Professional installation is required for Viasat, but if you want to connect a third-party router later, you can do so by following the instructions provided with your router.

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Starlink's equipment is a bit different from other satellite internet providers, with the modem built into the satellite dish. You can't use your own modem, but you can use a different router, which is actually recommended for many users.

The router that comes with Starlink is outdated, with Wi-Fi 5 technology and 802.11a/b/g/n/ac standards, and WPA2 security. This might not be a problem for casual internet users, but it's worth considering if you need more robust connectivity.

To get the most out of your Starlink connection, consider opting for a third-party router like the TP-Link AXE5400, which offers more features and better performance.

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To set up satellite internet, you'll need some essential gear. This includes a receiver or satellite internet dish, modem, router, and a device like a computer or phone for using the internet.

The good news is that many major satellite internet providers, such as Hughesnet, Viasat, or Starlink, will include these components in your initial package. However, you may need to pay a rental or purchase fee for the dish, modem, and router.

To give you a better idea of what you'll need, here's a rundown of the required equipment:

It's worth noting that the specific requirements may vary depending on your provider and the plan you choose. Be sure to check with your provider to confirm what's included in your package.

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You'll need to set up your Starlink equipment, which includes a satellite dish with a built-in modem and a separate router. The router is a bit outdated, using Wi-Fi 5 technology and WPA2 security.

To connect your devices to the internet, you'll need to configure your network. Start by turning on the Starlink router and allowing it to boot up. The router has no Ethernet or USB ports, so you'll need to rely on Wi-Fi connections.

You can connect your devices to the Starlink router's Wi-Fi network, but keep in mind that it's a bit limited. The router's specifications are not ideal, making it less suitable for heavy internet use or multiple devices connected at once.

If you need more reliable internet connections, consider using a third-party router. The TP-Link AXE5400 is a good option, offering better performance and more features than the Starlink router.

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Connecting your router to your satellite internet service can be a straightforward process. You'll need to follow the steps provided with your router, which usually involves plugging it into your modem with an Ethernet cable.

However, some satellite internet providers require professional installation, so you may not have the option to connect a router yourself. For example, Hughesnet and Viasat both require a technician to set up your satellite dish and modem-router device.

Connecting your internet service is a crucial step in getting started with your satellite modem. Just follow the steps below.

Connecting your router to your satellite internet modem should be an easy and straightforward process for most users.

The process is simple, and it's a great opportunity to ensure your router is properly set up and configured.

Connecting your router to your satellite internet service can be done by following the steps outlined in the user manual that came with your modem.

It's essential to follow the manufacturer's instructions to ensure a smooth and successful connection.

You'll need to locate the Ethernet port on your modem and connect it to the Ethernet port on your router.

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Connecting your satellite modem is a relatively straightforward process. Most providers require professional installation, but you can connect a third-party router later if needed.

Hughesnet and Viasat both require professional installation, so a technician will set up your satellite dish and modem-router device for you. However, if you want to connect a third-party router at a later time, you can do so by following the instructions provided with your router.

Connecting your Starlink router is a bit different, as it requires self-installation. You'll need to connect the dish to your router and plug it into a power outlet with the cables provided.

Hughesnet's satellite modem-router combo, the HT2000W, is a quality device that comes with modern features like dual-band technology and WPA security. However, if you want to connect a third-party router, you can do so by plugging it into the HT2000W with an Ethernet cable.

Viasat's satellite internet equipment doesn't come with a specific model number, but it includes dual-band 802.11ac technology and WPA security. If you want to connect a third-party router, you'll need to follow the instructions provided with your router.

Connecting a third-party router to your Starlink dish requires an Ethernet adapter, which you can buy from the company's website. Then, you'll need to plug the dish into the Ethernet router and connect it to your preferred router device.

Renting Hughesnet's modem and router combo costs between $14.99 and $19.99 a month, while purchasing it outright will cost you $349.99. If you think you'll stick with the service for the long run, purchasing might be a good option.

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Compatibility is crucial when connecting satellite modems. It's not a one-size-fits-all solution, and you'll need to check the compatibility of your modem with your internet service provider (ISP).

Note that the compatibility information provided is not exhaustive, so it's essential to verify with your ISP for a comprehensive list of compatible products.

Satellite modems are designed to work with specific types of internet connections, such as Ka-band or Ku-band. Make sure your modem is compatible with your chosen connection type.

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A satellite modem uses a combination of RF (radio frequency) and IP (internet protocol) technologies to provide internet access.

The frequency range for satellite modems is typically between 5 and 30 GHz.

To establish a connection, a satellite modem needs a clear line of sight to the satellite, which can be affected by obstructions such as trees, buildings, or hills.

The data transfer rate of a satellite modem can vary, but it's usually around 1-10 Mbps.

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FEC coding is a crucial technique in satellite communications that helps correct errors caused by noise and interference. It adds an artificial redundancy to a data stream at the transmitting side.

This redundancy is used to correct errors at the receiving end, making it an essential feature in satellite communications. Satellite's limited power results in a poor signal-to-noise ratio at the receiver.

An FEC encoder applies an error correction code to the digital stream, adding redundancy. The encoder is a critical component in the FEC coding process.

The Digital Video Broadcasting standard defines a concatenated code consisting of inner convolutional code and outer Reed-Solomon code. This code can correct up to 8 bytes in a block.

The inner convolutional code has rates of 1/2, 2/3, 3/4, 5/6, and 7/8. It's a standard NASA code that's been punctured to achieve these rates.

The Reed-Solomon code has a block length of 204 bytes and an information block of 188 bytes.

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Differential coding is used to resolve the phase ambiguity found in modulation types like PSK and QAM.

This means that the data is made to depend not only on the current symbol, but also on the previous one, effectively resolving the ambiguity.

Modulation types like PSK and QAM have a phase ambiguity, which can be resolved using differential coding.

This technique helps to ensure that the carrier can be restored in a single way, without any confusion.

Differential coding is a deliberate approach to coding, making the data dependent on both the current and previous symbols.

It's a clever solution to a common problem, and it's widely used in various applications.

We take our research process very seriously, which is why we begin every article with an extensive review of the latest information. This ensures that the information we provide is accurate, up-to-date, and relevant.

We looked at the equipment and policies of the three biggest satellite internet providers: Viasat, Hughesnet, and Starlink. We also reviewed third-party alternatives.

We compared the companies' equipment by looking at third-party data, customer reviews, and by talking to people with hands-on experience.

The 9522B Iridium Satellite Modem and COM9522B Interface Modem have a wide operating voltage range of 9 to 18 Vdc, with a nominal voltage of 12 Vdc.

The maximum supply current is a significant consideration, and in this case, it's 2500 mA.

The communication rate between the data logger and the COM9522B is a fast 19200 bps.

This device operates in full-duplex mode, allowing for simultaneous transmission and reception of data.

The operating temperature range is quite broad, spanning from -40° to +70°C.

The device's dimensions are relatively compact, with a width of 3.8 cm (1.5 in.).

The weight of the device is approximately 476 g (17 oz).

Here's a summary of the device's key specifications:

If you're in the market for a satellite modem, you've got a few options to consider.

The HughesNet Gen5 is a popular choice, offering speeds of up to 25 Mbps and data plans ranging from 5 to 50 GB per month.

For those who need a bit more speed, the Exede Internet service is a good alternative, with speeds of up to 12 Mbps and data plans starting at 10 GB per month.

The Viasat service is another option, offering speeds of up to 100 Mbps and data plans ranging from 10 to 100 GB per month.

It's worth noting that some satellite modems come with built-in Wi-Fi capabilities, making it easy to connect your devices to the internet.